Annotation of src/usr.bin/rdist/isexec.c, Revision 1.11
1.11 ! mpi 1: /* $OpenBSD: isexec.c,v 1.10 2015/01/20 09:00:16 guenther Exp $ */
1.3 deraadt 2:
1.1 dm 3: /*
4: * Copyright (c) 1983 Regents of the University of California.
5: * All rights reserved.
6: *
7: * Redistribution and use in source and binary forms, with or without
8: * modification, are permitted provided that the following conditions
9: * are met:
10: * 1. Redistributions of source code must retain the above copyright
11: * notice, this list of conditions and the following disclaimer.
12: * 2. Redistributions in binary form must reproduce the above copyright
13: * notice, this list of conditions and the following disclaimer in the
14: * documentation and/or other materials provided with the distribution.
1.7 millert 15: * 3. Neither the name of the University nor the names of its contributors
1.1 dm 16: * may be used to endorse or promote products derived from this software
17: * without specific prior written permission.
18: *
19: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
20: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
23: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29: * SUCH DAMAGE.
30: */
1.6 millert 31:
1.10 guenther 32: #include <sys/types.h>
1.11 ! mpi 33: #include <elf.h>
1.10 guenther 34: #include <fcntl.h>
35: #include <unistd.h>
1.1 dm 36:
1.10 guenther 37: #include "client.h"
1.1 dm 38:
39: /*
1.9 guenther 40: * Determine whether 'file' is a binary executable or not.
1.1 dm 41: */
1.6 millert 42: int
43: isexec(char *file, struct stat *statp)
1.1 dm 44: {
1.9 guenther 45: Elf32_Ehdr hdr;
1.1 dm 46: int fd, r;
47:
48: /*
49: * Must be a regular file that has some executable mode bit on
50: */
51: if (!S_ISREG(statp->st_mode) ||
52: !(statp->st_mode & (S_IXUSR|S_IXGRP|S_IXOTH)))
53: return(FALSE);
54:
55: if ((fd = open(file, O_RDONLY, 0)) < 0)
56: return(FALSE);
57:
1.9 guenther 58: r = read(fd, &hdr, sizeof(hdr)) == sizeof(hdr) &&
59: IS_ELF(hdr) && hdr.e_type == ET_EXEC;
60: close(fd);
61:
62: return (r);
1.1 dm 63: }